BALANCE AND STABILITY

Question 1

What is a object in dynamic equilibrium

Answer 1

a system in dynamic equilibrium is in motion, but it is experiencing no change in velocity or direction.

Question 2

what is a object in static equilibrium

Answer 2

So an object in static equilibrium is completely at rest.

Question 3

what is stability

Answer 3

Stability is simply the resistance of an object to having its equilibrium disturbed. The more stable the object, the more resistance it has against forces or torques that attempt to disrupt its equilibrium.

Question 4

what is balance

Answer 4

Balance is the ability to control the current state of equilibrium, and it implies conscious effort and coordination.
So stability is more of a mechanical term, whereas balance is more of a neuromuscular reference.

Question 5

what is stable equilibrium + exemple

Answer 5

an object placed in such a way that a large force or torque is required to disrupt its current position.
a pyramid place on its base

Question 6

what is unstable equilibrium + exemple

Answer 6

an object that requires very little force or torque to disrupt its current state.
a pyramid place on the tips

Question 7

what is neutral equilibrium + exemple

Answer 7

an object that has no tendency to fall in one direction or the other.
a sphere

Question 8

A force applied to an object in stable equilibrium allows gravity to act as a which type of force

Answer 8

restorative

Question 9

what happen if the applied force is removed before the object falls over

Answer 9

a torque caused by gravity will return the object to its original position because the line of gravity is still on the original side of the axis of rotation.

Question 10

what happen if the applied force causes the line of gravity of the object to fall opposite the original side of the axis of rotation + gravity will act a which type of force

Answer 10

gravity would produce a torque, causing the object to fall over
disruptive force

Question 11

the more torque required to overcome the restorative force the more stable/unstable the object is

Answer 11

stable

Question 12

during neutral equilibrium does a restorative or disruptive force exist

Answer 12

no

Question 13

what is a major factor affecting linear stability

Answer 13

mass
The greater the mass, the greater the force required to linearly accelerate the object.

Question 14

Increased stability is accompanied by a decrease in

Answer 14

mobility

Question 15

what is linear stability

Answer 15

the resistance of an object to having its equilibrium disturbed. Therefore, linear stability is the resistance of a body to having its linear equilibrium (i.e., linear inertia) disrupted

Question 16

the more massive object will have less or more linear stability

Answer 16

more

Question 17

the center of gravity must be _ in order to rotate it about an axis

Answer 17

raised

Question 18

If the center of gravity remains on its original side relative to the axis of rotation, it will produce a

Answer 18

restorative torque

Question 19

if the center of gravity is displaced to the opposite side of the axis of rotation, its torque is considered

Answer 19

disruptive

Question 20

what affect rotational stability

Answer 20

an object is affected by mass of object, height of center of gravity, and size of base of support.

Question 21

how does the mass affect the rotational stability

Answer 21

Increasing the weight will increase the stability because the torque keeping the object upright will be larger since the restorative torque produced by gravity is proportional to the weight of the object.

Question 22

how does the center of gravity affect the rotational stability

Answer 22

The lower the COG, the greater the vertical displacement of the COG, and the greater the force required to disrupt rotational equilibrium.